The team’s search for the new material, described in
the journal ACS Nano, centered on nano-sized particles
of titanium dioxide, which were coated with either
cadmium sulfide or cadmium selenide. The particles
were then suspended in a water-alcohol mixture to
create a paste. (Note: Similar work in this area is also
being conducted at the University of Toronto, Ontario,
Canada, incorporating quantum dots of solar cells.)
When the paste was brushed onto a transparent
conducting material and exposed to light, it created
Whether the subject is “green” coatings made
from sustainable, bio-renewable raw materials, or the
potential to make paints and coatings from substances
like whey protein, or lowering VOCs via the use of non-VOC coalescents or new latex resins that do not require
coalescing aids, the global coatings industry will only
be able to take advantage of new approaches by being
open to the concept of transformation thinking, which
automatically leads to innovation.
At this very moment, the metal container coatings
industry is dealing with the so-called “BPA” (bisphenol A)
and “BADGE” (bisphenol A diglycidyl ether) issues, which
are not going to go away—and it will be quite interesting
to see if/how epoxy acrylates and epoxy phenolics can
be replaced in these critically important applications,
because doing so will require truly transformational
thinking—there is no other way.
Applying transformation thinking to coatings products
and processes is the key to the industry’s future, and has
the power to change how we think about coatings forever.
• King Industries: Solvent-based, tin-free 2K polyurethanes, XK-
635 and XK-639; Waterborne Blocked Isocyanate XK-635;
100% active polyester polyols XM-360 and XM-366.46
• Grace Material Technologies: SYLOWHITE® titanium dioxide
extender. Note: This particular example does not represent
new technology, but it is my understanding that it has not been
broadly available, and is likely, therefore, to be unfamiliar to
many of the readers of this article. 47
• Essential Industries: 40 g/l hydroxyl-functional urethane/acrylic
• Patcham (FZC): Zero-VOC, anionic, APE-free polymeric wetting
agent for use in dispersion paints and colorants, Pat-Add DA
202; polymeric, mineral oil-, polysiloxane- and fluorocarbon-free
defoamer based on green chemistry for both solventborne and
waterborne paints, Pat-Add AF 5210; No-VOC coalescing agent
for waterborne dispersion systems, claimed to be similar in performance to 2, 2,4-trimethyl- 1,3-pentanediol mono(2-methylpro-
panoate), Pat-Add COAT 77.49
• HALOX: Low odor, water-soluble organic-based, tannic-, phos-phoric- and gallic acid-free paint additive which converts red
rust to black iron oxide, Halox® RC-980.50
• The Dow Chemical Company: Waterborne series epoxy hardeners with very low odor, increased water-vapor permeability, rapid
drying and curing and processing ability at lower temperatures,
Dow D.E.H.™ Series 800 polyamine adducts. 51
• Solvay Rhodia: Biodegradable vegetable oil defoamer for low/
zero VOC for flat-to-semi-gloss waterborne coatings, Rhodoline®
621; APE-free, zero VOC additive that promotes extended open
time, Rhodoline® OTE-500.52
• Cytec Industries Inc.: Ultra-low (<0.1%) free formaldehyde, high-solids (98%, minimum) melamine crosslinker for ambient and
low temperature cure coating applications, for solventborne and
cationic waterborne coatings, CYMEL® XW 3106 Resin. 53
• Alberdingk Boley GmbH: Water-based UV-curable, hard elastic
PU-dispersion with short flash-off time, high scratch- and chem-ical-resistance, high gloss, good pigment and extender wetting,
LUX 255; Self-crosslinking, multiphase emulsion with superior
water barrier, excellent adhesion properties and superior corrosion resistance, very low MFFT, and good blocking resistance,
AC 2403; and Lignin-reactive hydrosol for wood protection, that
significantly increases the weathering resistance in comparison
to conventional primers, Lignocure 2010.54
• Emerald Performance Materials (Emerald Kalama Chemical
LLC): Low VOC, superior wet edge (flat), increased scrub resistance proprietary blend of three dibenzoates, K-Flex® 975P
Coalescent for Coatings. 55
• Dow Corning Corporation: New acrylic slip aids for waterborne
systems, 401LS, 402LS, and 205SL. 56
• Troy Technology Corporation, Inc.: VOC-free, formaldehyde-free,
broad-spectrum wet-state preservative, Mergal® 758.57
• Arkema: Associative neutralizing and co-dispersing agent for
ultra-low or zero VOC aqueous coatings, also said to contribute
anti-corrosion performance and reduce the amount of anti-flash
rusting agents required, Reverlink® NoVOC.58
• Croda International Plc: New bio-based dimer diamine functional
building block designed for use in epoxy systems, Curing Agent
• BYK Additives and Instruments (Altana): New Inorganic additive
based on surface modified silica nanoparticles ( 20 nm) for solvent, solvent-free and radiation curable coatings for wood, furniture and industrial coatings to improve scratch and abrasion
resistance, NANOBYK® 3605; new water dispersion of multi-wall
carbon nanotubes to impart conductivity and antistatic behavior
to waterborne coatings, CARBOBYK® 9810.60
• Cardolite Corporation: A novel class of epoxy curing agents
called phenalkamides has been developed to fill a gap between
polyamide and phenalkamine chemistries that are said to offer
the benefits of both while mitigating their limitations; coatings
formulations based on phenalkamides are said to have the
desired color stability, overcoat window, and flexibility of polyamides, but with the outstanding corrosion protection and fast low
temperature cure of phenalkamines, Lite 3000 series.61
• Falcon Technologies: A polysaccharide-based sustainable colloid technology that is able to replace HEC at 100% with similar
viscosity at a lower average particle size distribution, enabling
improved mechanical properties, LPC100.62
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6. Pilcher, G.R., “Challenge 2005 and Beyond: Recognition,
Transformation and Profitable Use of Innovative Thinking,”
JCT Research, 2, No. 5, pp. 343-348 (2005).
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Organic Coatings: A Systems Approach, American Chemical
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Methodology and Metrologies, Oxford Press, New York, 2001.
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Service Life Prediction of Polymeric Materials: Global Perspectives, Springer, 2008.
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